Loans And Allowance For Loan Losses (Troubled Debt Restructurings) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 Contract		Dec. 31, 2012 Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts	583		943
Post-modification balance for loans modified or renewed	$ 436,345,000	[1]	$ 501,844,000	[2]
Write-down	4,000,000		16,000,000
Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1		22
Post-modification balance for loans modified or renewed	80,000		3,315,000
Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	141		326
Post-modification balance for loans modified or renewed	15,709,000		31,996,000
Credit Card Receivable [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0		0
Post-modification balance for loans modified or renewed	0		0
Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	65		87
Post-modification balance for loans modified or renewed	2,716,000		5,316,000
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	206		282
Post-modification balance for loans modified or renewed	316,790,000		301,172,000
Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	47		74
Post-modification balance for loans modified or renewed	145,628,000		140,993,000
1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	131		130
Post-modification balance for loans modified or renewed	47,187,000		76,200,000
Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	28		78
Post-modification balance for loans modified or renewed	123,975,000		83,979,000
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	170		226
Post-modification balance for loans modified or renewed	101,050,000		160,045,000
Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	78		116
Post-modification balance for loans modified or renewed	44,211,000		107,580,000
Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	40		70
Post-modification balance for loans modified or renewed	51,789,000		47,940,000
Small Business [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	52		40
Post-modification balance for loans modified or renewed	5,050,000		4,525,000
Retail [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	207		435
Post-modification balance for loans modified or renewed	18,505,000		40,627,000
Principal Forgiveness [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	22,774,000		35,539,000
Principal Forgiveness [Member] | Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	0		0
Principal Forgiveness [Member] | Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	0		0
Principal Forgiveness [Member] | Credit Card Receivable [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	0		0
Principal Forgiveness [Member] | Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	0		0
Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	20,491,000		481,000
Principal Forgiveness [Member] | Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	19,993,000		77,000
Principal Forgiveness [Member] | 1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	424,000		404,000
Principal Forgiveness [Member] | Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	74,000		0
Principal Forgiveness [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	2,283,000		35,058,000
Principal Forgiveness [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	2,283,000		35,058,000
Principal Forgiveness [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	0
Principal Forgiveness [Member] | Small Business [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	0		0
Principal Forgiveness [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	0		0
Below Market Interest Rate [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	337,740,000		314,650,000
Below Market Interest Rate [Member] | Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	0		985,000
Below Market Interest Rate [Member] | Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	11,513,000		10,202,000
Below Market Interest Rate [Member] | Credit Card Receivable [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	0		0
Below Market Interest Rate [Member] | Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	1,118,000		1,359,000
Below Market Interest Rate [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	272,169,000		217,052,000
Below Market Interest Rate [Member] | Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	121,263,000		93,732,000
Below Market Interest Rate [Member] | 1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	37,180,000		60,735,000
Below Market Interest Rate [Member] | Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	113,726,000		62,585,000
Below Market Interest Rate [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	52,940,000		85,052,000
Below Market Interest Rate [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	22,399,000		45,712,000
Below Market Interest Rate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	28,988,000		38,285,000
Below Market Interest Rate [Member] | Small Business [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	1,553,000		1,055,000
Below Market Interest Rate [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	12,631,000		12,546,000
Term Extensions and/or Other Concessions [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	75,831,000		151,655,000
Term Extensions and/or Other Concessions [Member] | Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	80,000		2,330,000
Term Extensions and/or Other Concessions [Member] | Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	4,196,000		21,794,000
Term Extensions and/or Other Concessions [Member] | Credit Card Receivable [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	0		0
Term Extensions and/or Other Concessions [Member] | Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	1,598,000		3,957,000
Term Extensions and/or Other Concessions [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	24,130,000		83,639,000
Term Extensions and/or Other Concessions [Member] | Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	4,372,000		47,184,000
Term Extensions and/or Other Concessions [Member] | 1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	9,583,000		15,061,000
Term Extensions and/or Other Concessions [Member] | Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	10,175,000		21,394,000
Term Extensions and/or Other Concessions [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	45,827,000		39,935,000
Term Extensions and/or Other Concessions [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	19,529,000		26,810,000
Term Extensions and/or Other Concessions [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	22,801,000		9,655,000
Term Extensions and/or Other Concessions [Member] | Small Business [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	3,497,000		3,470,000
Term Extensions and/or Other Concessions [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Post-modification balance for loans modified or renewed	$ 5,874,000		$ 28,081,000

[1] As a result of these loans being reported as TDRs, there were net charge-offs of approximately $4 million recorded during 2013.TDRs by Concession Type Year Ended December 31, 2012 (in thousands, except contract data)Number of Contracts Principal Forgiveness Below Market Interest Rate Term Extensions and/or Other Concessions Total Investment properties74 $77 93,732 47,184 140,993 1-4 family properties130 404 60,735 15,061 76,200 Land acquisition78 — 62,585 21,394 83,979 Total commercial real estate282 481 217,052 83,639 301,172 Commercial, financial and agricultural116 35,058 45,712 26,810 107,580 Owner-occupied70 — 38,285 9,655 47,940 Small business40 — 1,055 3,470 4,525 Total commercial and industrial226 35,058 85,052 39,935 160,045 Home equity lines22 — 985 2,330 3,315 Consumer mortgages326 — 10,202 21,794 31,996 Credit cards— — — — — Other retail loans87 — 1,359 3,957 5,316 Total retail435 — 12,546 28,081 40,627 Total loans943 $35,539 314,650 151,655 501,844(1)

[2] As a result of these loans being reported as TDRs, there were net charge-offs of approximately $16 million recorded during 2012.